Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: DNFLOH67RS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
740-280 A Philo OH 9321 OHIO BELL TEL CO 324      
740-280 0 Philo OH 9321 OHIO BELL TEL CO 324      
740-674 A Philo OH 9321 OHIO BELL TEL CO 324      
740-674 4 Philo OH 9321 OHIO BELL TEL CO 324      
740-674 5 Philo OH 9321 OHIO BELL TEL CO 324      
740-674 6 Philo OH 9321 OHIO BELL TEL CO 324      
740-674 7 Philo OH 9321 OHIO BELL TEL CO 324      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.